When greenhouse fertilizers are used in greenhouses, if urea is used, the nutrient decomposition of urea is slow due to the low soil temperature, so the fertilizer effect is slow; while the use of ammonium bicarbonate has a rapid fertilizer effect, the ammonia in the ammonium bicarbonate can easily be generated in the closed environment of the greenhouse. Fat damage. Ammonium sulphate can overcome the disadvantages of the above two kinds of chemical fertilizers. Therefore, the use of ammonium sulphate in greenhouses for winter crops is better than urea and carbamate.
Generally, it is appropriate to apply 20-30 kg ammonium sulfate per acre. Fertilizers should be dissolved in water beforehand, and the fertilizer solution should be flushed with water. Usually every other time, water, fertilizer and water can be poured once.
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